diff --git a/tests/system-test/2-query/leastsquares.py b/tests/system-test/2-query/leastsquares.py
index ecdbecb526eb13e7417fb11359f048442bd68b3d..79c7d24410cbd9ce3e37710dbe09b315b58870c1 100644
--- a/tests/system-test/2-query/leastsquares.py
+++ b/tests/system-test/2-query/leastsquares.py
@@ -167,7 +167,7 @@ class TDTestCase:
                     where_claus = self.__where_condition(query_conditon=select_claus)
                     having_claus = self.__group_condition(col=select_claus, having=f"{select_claus} is not null")
                     for arg in self.start_step_val:
-                        if not  isinstance(arg,int) or isinstance(arg, bool):
+                        if not  isinstance(arg,int) or isinstance(arg, bool) or BOOL_COL in select_claus or BINARY_COL in select_claus or NCHAR_COL in select_claus or TS_COL in select_claus:
                             err_sqls.extend(
                                 (
                                     self.__single_sql(select_clause=select_claus, from_clause=tb, start_val=arg),